Valve-grinder.



C. L. LATIIVIER. vALvE GRINDER.

APPLICATION FILED DEC-5.1917.

Patented Sept. 17, 1918.

/lvI/EN TUR l 417/776# WIT/VESSES UNITED sTATEsrrENTOFFICE.;

CHARLES L. LAQTIMER, 0E EoE'r wnnswon'rn, NEW Yoan fVALVE-Grunn'iiietf?y 'Richmond and State of New York," have invented' anew and Improved'Valve-Grin'der, of which the following is a full,clear, and exact description. y

My invention relates to v grinding tools, and has reference moreparticularly to a mechanism for grinding alvalve mechani- -ciprooatethefrack v9*and, 1n consequence,

cally in lplace of manually. y

An object of the invention is to provide a compact mechanical drivewhich can be,

easily accommodated on the head of a cylinder of an internal-combustionengine for engaging the valve to be ground without in,

terference with the'other parts .locatedon the head. l i Anotherobject'of the -inventionfis to -`provide a device the oscillatingstrokfe'of 'which may be varied sothat the valve to'jbefgro'und may berotated through angular distances of varying degrees.

With the above and other objects in view,-

the nature of which will..1 more fully appear as the descriptionproceeds, the invention consists in the novel construction, combinationand arrangement of parts as herein fully described, illustrated andclaimed.

In the accompanying drawings, forming part ofthe application, similarcharacters ofV reference indicate. corresponding parts in both views. Ay

*Figure l is a cross section through the device embodying my invention;and

Fig. 2, a vertical section on line 2 2, Fig. l, illustrating the device'in use.

Referring to the drawings, '3 is a valveengaging head havinga stem 4 theupper part of which is revolubly mounted 1n a housing '5 which carries aball-bearing socket 6 at the bottom. The stem carries a cone 7 which isconstrained to move with the stem and which cooperates with theball-bearingl Y vided with a dented portion 8 forming :a Y pinion. Arack 9 is mounted to slide-in a guide l0 secured to the wall of thehousing 5, so that said rack is caused to slide transv ersely of thestem and meshes lwith the pinion '8. The rack 9 has a pin 11 which isconnected to a' crank pin 11 by a rod 12.

The crank pin 11' is mounted eccentrically in a carrier 13 which isrevolubly Specification of Letters Patent.

`the housing 5 lterminating' with a rin vthe valve is introduced.

- mounted in a suitable recess provided near turn the stem` 4forth.and-'backl p The angular displacementof thev stem may be varieding the carrierlB'in its recess.

Patented sept. 1v, .19118; f Application iled December. 5, 1917. SerialNo. 205,507. i

' Pressure on 'the valve duringthey grinding ingrace 20 whichis `freefromv the stem.

The Hstem terminates in apballshaped head l21 which! isengaged in asocket 22. :The

socket has an extension through the top of.

which can be `easily engagedA by the 19u and, therefore,` relievingpressure from 'the valve 24.

To adapt the device. toengines of diler-` by meansv of butteriyy nuts 26which engage pins '27 provided` on the housing and projecting throughslots 28 infthe sleeve. By adjusting this sleeve onthe housing. thelength of same may be variedand, therefore, the engagement ofthe' headwith the valve adjusted according to the position of the valve in thevcasing `of the cylinder. In cases where the valve 24 is located 'belowthe surface I provide grips' 29 `in the lower end 'of vthe sleeve forengaging the opening, normally occupied by the plug, through which 'hispermits the locking of the housing to the cylinder casing when grinding.y

In. cases where the valve 24 is Hush or above the. cylinder casting, as,for example, in the Ford motor, then the 4sleeve 25 may rest directly onthe top-ofl -the* cylinder, the weight of thepdevice and pressure of theman 23," and l Y. v and whereby the stem, withthe head, may loe, raisedagainstthe-resistance.o1c the spring is maintained by a spring -19mounted on the I stem. vOne end of ,the spring rests on the y f head 3-while the other engages av hall-bearr v Operating being sufficient formaintaining the saine on the cylinder.V llie engagement of the sleevewith the cylinder .prevents the l pressure retaining theidevice onthecylinder from being transmit-ted vto the valveas the stem is yieldablerelative'to the housing 5 under the action of 'thespring 19.'

To increase the eiiciency of the device, an auxiliary spring is rovidedon the valve whichv is' to be groun This spring 30 is weaker than thespringy 19 but it is sutiilcienttov raisethe valve 2l from its seat whena, pull is exerted on vtlie'i'ing 23 thereof, coinpressing the 'spring19 and not allowing the valve to disengage .from the valve-engaginghead-3." Ast-lie. head is rotated during the forward 4movement of'thestem, the position of the v'al've'. relative to vits seat' will belchanged and thereby av better grind-ing of the seatiandvalve isobtained.

I claim-f3.1' K v Y1.1m con'ibination, a head for engaging a valve to beground, a stem movable with the head, a'pinion-inovable with the stein,a

housing,accommodating the upper end of the stein, aj' rack slidablymounted in tiielious v,lng.transverselyvof the stein and engaging thepinion',vv ai. disk revolubly mounted inthe housing, a wrist p iii insaid disk, a rod con- :nectingytliefivrist pin to the rack, aneccenqtricfi'irrsaiddisk carrying said wrist pin @hereby the Positionofsaid pin relative to mvthe A center o the diskv may be varied and jtlreby the'throw, and means for rotating ,h disk.'

2.' In combination, a telescoping housing,

means .for adjusting the .length of the housing, a .head for engaging avalve to be -ground, meansin one section ofthe housing for imparting anoscillatory movement tor the head, and anchoring means associated withthe other V'section of the `housing for copies of this patent may beobtained for Lemme and means whereby thestein may be movedlongitudinally while it isafeeiprocated.

i. In combination, a telescoping housing,

means for adjusting vthe .length of the housi ing, anchoring means atthe lower end of one? ofthe housings parts, said anchoring 'means beingmovable transversely of theflliousiin'gg adjustment, a head for engaginga"-valveftc be ground, and means in the other,parti-'tif`- the housingfor imparting an oscillatory"- inovement to the head'.

In combination, a head for engaging a'- valve to be ground, a steinmovable withY the head, a pinion on said stein, a housing accommodatingthe upper end of the stem,

said stem being revoluble and slidalolel `in` l said housing, a rackslidably mounted inthe A housing transversely of the stein and engagingthe pinion, a disk revolubly mounted iii the housing, a wrist-pincarrier mounted eccenti'ically at the margin of the disk,ineans vforlocking said `carrier -in predetermined posit-ions, a l,Wrist pin onsaid eccentric,a.ro'd connect-ing the wrist pin of the rack, 'means forrevolving the disk, and means whereby the stein may be movedlongitudinally Without interfering with the 'oscillation of the stem bythe rack. 1

CHARLES L; LATIMER.v

ve cents each, by addressing the Commissioner of Patents, Washington, D.C. i

